Comet 3I/ATLAS, a rare interstellar visitor, is visible this week as it departs the solar system, with some public events ...

A viral tweet claims new XRISM images show interstellar comet 3I/ATLAS glowing like a spaceship engine, fuelling speculation that it may be an alien probe. Here is the truth behind the theory and what ...

Don't miss out on our latest stories. Add PCMag as a preferred source on Google. Is an alien spacecraft visiting our solar system? A wave of videos featuring famed physicist Michio Kaku making that ...

A mysterious interstellar comet known as 3I/ATLAS is about to make its closest approach to Earth in December 2025. Here's everything to know about it.

Saturn's largest moon, Titan, has long been of interest to NASA because they believe it could host an ocean underneath its ...